Equipment useful for winning ores particularly coal in longwall mining

Abstract

The present invention relates to an improved equipment useful for winning of ores particularly coal in longwal mining, the equipment comprises hydraulic master chock shield having atleast two legs at the outer edges, the master chock shield having a cylindrical conveyor belt intake end roller rotatibly mounted on a stand fixed to the base plate of the master chock shield, the base plate of the said chock shield also being provided with a plurality of stands having free moving conveyor belt guide rollers a plurality of known hydraulic chocks having atleast four legs at its edges, being placed in front of master chock shield in a horizontal line, the master chock shield and the chocks being interlinked by atleast one hydraulic ram, the base plates of each of the chocks being provided with plurality of stands having free conveyor belt guide rollers, the end chock also being provided with two horizontally fixed multi-telescopic booms supported on free moving wheels the extreme end of the booms being fixed to a fixed belt conveyor structure the fixed belt conveyor structure having free moving conveyor belt guide rollers a drive head conveyor belt roller being provided at the extreme end of the fixed structure.

We claim: 
     
       1. A system useful for winning of ones which comprises a hydraulic master chock shield having a base plate and having at least two legs that support a canopy, the master chock shield having a cylindrical conveyor belt intake end roller rotatably mounted on a stand fixed to the base plate of the master chock, the base plate of said chock shield also being provided with a plurality of stands having free moving conveyor belt guide rollers, a plurality of hydraulic chocks, each having a base plate and a canopy and having at least four legs at the edges of the base plate to support the canopy, said chock being placed in front of the master chock shield in a horizontal line along a gate road, said master chock shield and the chocks being interlinked by means of at least one hydraulic ram, the base plates of each of the chocks being provided with plurality of stands having free conveyor belt guide rollers, the end chock also being provided with two horizontally fixed multi-telescopic booms supported on free moving wheels, the extreme end of the said booms being fixed to a fixed belt conveyor structure, the fixed belt conveyor structure having free moving conveyor belt guide rollers, a drive head conveyor belt roller being provided at the extreme end of the fixed structure. 
     
     
       2. An improved system as claimed in claim 1 wherein the multi-telescopic boom is of hydraulic or mechanical type. 
     
     
       3. A system according to claim 1 when employed in longwall mining of coal.